<!DOCTYPE html>  
<html>  
<head>  
    <meta charset="UTF-8">  
    <h2>{{ the_title }}</h2> 
    <link rel="stylesheet"  href="static/login.css"/>
</head>  
<body>  
    <div id="login">  
        <h1>Login</h1>  
        <form method="post" action="/entry">  
            <input type="text" required="required" name="user"></input>  
            <button class="but" type="submit">欢迎登录</button>  
        </form>  
    </div>  
</body>  
</html> 